Machine for trimming the brims of hats.



MACHINE FOR TRIMMIHG THE BRIMS QF HATS. APPLICATION FILED MA-Y 25. 1914.

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Patented Apr. 3, 1917.

F. DURO, G. CRIVELLI 6L F. PAMPUHO.

MACHINE FOR TRIMMING THE BRIMS 0F HATS.

' APPLICATION FPLED MAY 25. T914.

Patented Apr. 3, 1917.

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F. DURO, G. CRIVE'LLI 6; F. PAMPURO.

MACHINE FOR vTR'IMIVHNGIHE BRIIVIS 0F HATS. APPLICATION man MAY25.1914'.

Patented Apr, 3, 1917.

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MACHINE FOR TRIMMING THE BRIMS 0F HATS.

APPLICATION FILED MAY 25| 1314.

Patented Apr. 3, 1917.

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ma s a ai FRANCESCO DURO, GIUSEPPE CRIVELLI, AND FRANCESCO PAIVIPURO, 0FMILAN, ITALY.

Specification of Letters Patent.4

Patented apr. s, ieri.

Appli-cation filed May 25, 1914. Serial No. 840,922.

To all whom t may concern:

Be it known that we, FRANCESCO DURO, Grusnrrn CmvELLI, and FRANCESCOFAM- rURo, subjects of the Kingdom of Italy, residing at Milan, Italy,have invented certain new and useful Improvements in Machines forTrimming the Brims of Hats, of which the following is a specification.

This invention relates to a machine for trimming the brims of stiff hatsafter they have been shaped, of the kind wherein the position of thecutter is automatically regulated by means of a cam or templet fiXed tothe hat holder, which latter is automatically' stopped at givenintervals. The machine chiefly comprises a lathe having a table whichrotates in an elliptical path, a holder for the hats provided with agage, an auto'- matic clutch for stopping the holder after eachrevolution 'of the said holder, and an automatically adjustable cutterwhich trims the brims of the hats according to the gage.

In the accompanying drawings- Figure l is an elevation of the machineshowing all the essential parts but omitting some parts which areunimportant.

Fig. 2 is a plan of the hat holder.

Fig. 3 is an elevation of a speed reducer with double motiontransmission.

Fig. 4 is a side elevation of the cutter.

Fig. 5 is a plan of the cutter.

Fig. 6 is a front elevation partly in section of the cutter.

Fig. 7 is a bottom plan view of the hat holder, and

Fig. 8 is a longitudinal section of said hat holder, taken on line 8-8,Fig. 2. A

The cutter f. (Fig. l), which has three crossed blades, is driven bymeans of a flexible shaft X from a main shaft Z, which latter is driven,in turn, from a motor or other suitable prime mover, (not shown). Theshafts X and Z are connected by an intermediate shaft Z having thereon aworm W, (Fig. 3), which meshes with and drives a worm wheel Q, thelatter being connected by intermeshing bevel gears Q, Q2, with thevertical, uppermost or top section X2 of a jointed shaft X. This shaft Xconsists, in the present instance, of three separate sections, whoseconfronting ends are connected by Cardan joints, the intermediatesection X3 being disposed.in an inclined position,

while the lowermost or bottom section X4V is mounted horizontally. Thelast-men tioned section Xt is provided with a worm T, (Fig. l), whichmeshes with anddrives a worm wheel U, keyed to a vertical shaft A,

lution of shaft A. For this purpose, said worm wheel has fixed to it adisk o, (Fig. l), which is formed with a peripheral notch p and isdesigned for coperation with a roller r, the latter being mounted on oneend of a longitudinally-movable, horizontal rod Q, carried in suitablebearings in the framework of the machine. Rod g is provided with aclutch-shifting fork g, which is engaged with the movable member of aclutch R, that is mounted on the shaft section X". The two members ofthis clutch tend normally to become disengaged, due to the eX- pansiveaction of a spring, (not shown), which is interposed between saidmembers and located interiorly of the same, said spring acting to pressthe roller 7 against disk 0, so that when the said notch p in disk 0comes opposite said roller, the latter will automatically enterthereinto, thus permitting the separation of the clutch members. Theholder and its shaft A are again set in motion by hand, by means of thelever y, during the time necessary for roller r to leave notch p. y

The hat to be trimmed is placed on the adjustable holder represented inFigs. l and 2, said holder being designed for rotation from or by theshaft A through the agency.

of suitable gearing connecting the upper end of said shaft with the baseof the holder and here shown as comprising a gear B connected to theaforesaid shaft end and a gear C driving the gear B and located beneathand connected` to said base P. The latter has mounted upon it a verticalpillar O, to whose upper end there is attached an elliptical cam ortemplet F, which is curved to conform precisely to the shape which thehat brim is to take, said cam serving to regu late the movements of thecutter in accordance with such shape, as hereinafter described. Uponthis cam is mounted, in turn, the body of the holder, or holder proper,which preferably consists of four curved brass strips or sections F', soshaped as to unite in forming an ellipse; each strip being provided withan inwardly-projecting rack member F2. The four racks F2 are disposed at90o apart from' one another, as

F3 and F4 are connected in some suitable manner to cam F, and thesecond-named pinion is rotated by a crank F5, the arrangement beingsuch, therefore, that rotation of pinion F4 will be transmitted topinion F3, and thence to the four racks F2, with the result that thelatter are operated simultaneously and to equal extents, therebyeffecting a corresponding adjustment of the holder sec,L tions F. Thesections F are automatically returned to initial position by means of apair'of springs F G, (Fig. 2), which are connected to two of saidsections located diametrically opposite each other, the retention of thesections in adjusted position being effected by means of aspring-controlled detent F7 that is designed to engage a toothed segmentor rack F8, (Fig. 7 rigidly con- V nected to the driving gear F4. In theconstruction illustrated, the operating crank F? is directly secured tosegment F8.

The lathe is equipped with a table, which, as previously stated, isdesigned to travel in an elliptical path, and carries the cutter f, themovements of the latter being controlled by the cam or templet F. Tothis end, the pedestalB2 is provided at its top with a bed or base plateB formed with a pair of guides 0, (Fig. 5), with which there is engageda horizontal slide plate S, that is yieldingly forced upward, togetherwith said bed plate, by a pair of verticalcoil springs 71;, (Fig. 6),disposed in vertical sockets or recesses 7h12 in said pedestal, and,

at the same time, yieldingly forced forward, or toward the hat holder,by a spring h', (Fig. 4), the latter spring being interposed between apair of depending arms C and D,

vthe former of which is rigid with the bed plate B, and the latter withslide S. At its forward end, the slide S, which constitutes one memberof the aforementioned table, is provided with a vertical spindle g, towhich is pivotally connected the forward end of the upper table memberL, the latter resting on slide S and, in tur'n, supporting the framewhich directly carries the cutter.

`Upon the eXtreme forward end of said slide,

is provided a roller Z, mounted on a hori- Zontal stud or pin anddesigned to ride along the under face of the cam F, against which it isheld b the 'pressure of springs h;

Awhile upon t e forward end of the member or plate L there are arrangedtwo rollers i and i', mounted on vertical studs or pins at oppositesides of the spindle g, the lastmentioned rollers being yieldingly heldagainst the peripheral edge of the cam by the pressure of spring 7u.

In consequence of this arrangement, the said rollers z' and 'i' arecaused to ride along the cam edge as the cam rotates, thus producing areciprocatory movement of slide S and plate L, which constitute thelathe table, alternately toward and from the hat holder. At the sametime, the bed plate, and with it the table L, S, alternately rises andfalls, under the tension of the springs L, so that the resultantmovement of the table, due to the combination of these two movements,being in an elliptical path. Furthermore, the action of the cam edgeupon the aforesaid rollers z', z", is such as to also produce a rockingor swinging movement of the plate L about the spindle g as a pivot; andas a result of such movement the cutter f, which is mounted horizontallyin a suitable chuck m, has its axis maintained constantly in a directionnormal to the curve of the cam, and, therefore, to the edge of the hatbrim. rIhe height of the aforesaid cutter above the table may beadjusted by means of a hand-wheel K, suitably connected with the body ofthe chuck; while the distance of the cutter from the hat holder may besimilarly regulated by a. hand-wheel K. The upper portion of the frameor support, which carries the cutter and its adjusting appliances, ispreferably made separate from the lower portion thereof, which isdirectly mounted upon the table, the two portions being connected by ahinge or pivot joint j, (Fig. 4), so that the former portion can beswung baekwardly away from the hat holder when the cutter is not in use.

We claim as our invention l. In a machine for trimming the brims ofpreviously-shaped hats, the combination, with a. hat holder having anelliptical gage whose size and shape correspond precisely to those whichthe trimmed brim is to take, and means for rotating said gage; of acutter; driving means therefor; and a cuttercarrying table having meanscoperative with said gage for causing said table to move in anelliptical path -which coincides with the curve desired for said brim,during the rotation of said gage.

2. In a machine for trimming the brims of previously-shaped hats, thecombination, with a hat holder having an elliptical gage whose size andshape correspond precisely to those which the trimmed brim is to take,and means for rotating said gage; of a cutter; driving means therefor;and a cuttercarrying table having separate means engaging the peripheryand lower face of said gage, the combined engaging action of said meanson said gage causing said table to travel in an elliptical path whichcoincides with the curve desired for said brim, during the rotation ofsaid gage.

3. In a machine for trimming the brims of previously-shaped hats, thecombination, with a hat holder having an elliptical gage whose size andshape correspond precisely elliptical path whichv coincides with theAcurve desired for said brim, during the rotation of said gage. A

4. In a Imachine for trimming the brims of previously-shaped hats, thecombination, with a hat holder having an elliptical gage whose size andshape correspond precisely to those which the trimmed brim is to take,and means for rotating said gage; of a cutter; driving means therefor;and a cutter- Cir carrying table having means coperative with said gagefor causing said table to travel in an elliptical path which coincideswith the curve desired for said brim, during thel rotation of the gage,and for constantly maintaining the axis of the cutter normal to thecurve of said gage throughout such rotation.

ln a machine for trimming the brims of previously-shaped hats, thecombination, with a hat holder having an elliptical gage whose size andshape correspond precisely to those which the trimmed brim is to take,and means for rotating said gage; of a cutter; driving means therefor;and a cuttercarrying table having means engaging the under face of thegage, and separate means engaging the periphery of the gage, thecombined action of the rstand second-named engaging means on said gagecausing said table to travel in an elliptical path which coincides withthe curve desired for said brim, during the rotation of said gage, andthe action of said second-named engaging means on said gage constantlymaintaining the axis of the cutter normal to the curve of said gagethroughout such rotation.

6. ln a machine for trimming the brims of previously-shaped hats, thecombination, with a hat holder having an elliptical gage whose size andshape correspond precisely to those which the trimmed brim is to take,and means for rotating said gage; of a cutter; driving means therefor; acutter-carrying table having means cop-erative with said gage forcausing said table to travel in an elliptical path which coincides withthe curve desired for said brim, during the rotation of the gage; andmeans for automatically stopping the rotation of said gage after eachrevolution.

7. In a machine for trimming the brims of previously-shaped hats, thecombination with a hat holder having an elliptical gage whose size andshape correspond precisely to those w iich the trimmed brim is to take,and means for rotating said gage; of a. cutter;

driving means therefor; and a cutter-carrying table pressed upwardly andforwardly toward said gage, said table having rollers simultaneouslyengaging the lower and peripheral faces of said gage, to control therespective upward and forward movements of said table during therotation of said gage, whereby said table is caused to travel in anelliptical path which coincides with the curve desired for said brim.

8. In a machine for trimming the brims of previouslyshaped hats, thecombination, with a hat holder having an elliptical gage whose size andshape correspond precisely to those which the trimmed brim is to take,and means for rotating said gage; of a cutter; driving means therefor; acutter-carrying table pressed upwardly and forwardly toward said gage,said table having rollers simultaneously engaging the lower andperipheral faces of said gage, to control the respective upward andforward movements of said table during the rotation of said gage,whereby said table is caused t0 travel in an elliptical path whichcoincides with the curve desired for said brim; and a clutch ass0-ciated with said gage-rotating means and arranged to open automaticallyafter each revolution of said gage, to terminate the rotation of saidgage.

9. In a machine for trimming the brims of previously shaped hats, thecombination, with a hat holder having an elliptical gage whose size andshape correspond precisely to those which the trimmed brim is to take,and means for rotating said gage; of a cutter; driving means therefor;and a cuttercarrying table comprising a member which is pressedsimultaneously upwardly and forwardly toward said gage, and a memberpivotally mounted upon the frstenamed member to move therewith, saidmembers having rollers engaging the lower and peripheral faces of saidgage during the rotation of the latter, whereby said table is caused totravel in an elliptical path which coincides with the curve desired forsaid brim, the rollers on the second-named member acting during suchrotation to impart a swinging or rocking movement to that member, tomaintain the aXis of said cutter constantly in a direction normal to thecurve of said gage. n

l0. In a machine for trimming the brims of previously-shaped hats, thecombination, with a hat holder having an elliptical gage whose size andshape correspond precisely to those which the trimmed brim is to take,and means for rotating said gage; of a cutter; driving means therefor;and a cuttercarrying table comprising a member slidable toward and fromsaid gage and normally pressed both in an upward and in a forwarddirection, and a member superposed upon the first-named member andpivoted to the same atits front end, said irst-named member being,provided at its front end With a roller engaging the under face of thegage, and said second-named member being provided at its front end witha pair of rollers located at opposite sides of its pivot and engagingthe peripheral face of said gage, said rollers acting to respectivelycontrol the upward and forward movements of said rst-named member duringthe rotation of the gage, whereby said table is caused to travel in anelliptical path which coincides With the curve desired for said brim,and the second-named rollers acting to produce a rocking or swingingmovement of the second-named memv ber about said pivot7 thereby tomaintain the axis of said cutter constantly in a direction normal to thecurve of said gage.

In Witness whereof We have hereunto set our hands in the presence of twoWitnesses.

FRANCESCO DURO. GIUSEPPE CRIVELLI. FRANCESCO PAMPURO. Witnesses:

'ANTONIO LISTURZIL,

GIOVANI CoLnINo.

Copies of this `patent may be obtained for vel cents each, by addressingthe Commissioner of Patents, Washington, D. C.

